> I would validate any HTML I needed to embedded within the document
> with an HTML editor which had enough sense to ignore any element that had a
> namespace other than HTML specified, together with any nested elements that
> were not declared to be HTML compliant. I would edit the Chemical ML
> material in an SGML/XML editor that was set-up to validate material in that
> DTD, but ignore any element (and its contents) that had a namespace
> specification for another DTD.
Of course, if you are allowed to invent whatever tools you need, you
can do whatever you want. I was asking for a *general* method of
validating document parts with alien subparts. Architectural forms
can perhaps provide this ability: I still don't understand them
well enough to be sure.
-- John Cowan http://www.ccil.org/~cowan cowan@ccil.org You tollerday donsk? N. You tolkatiff scowegian? Nn. You spigotty anglease? Nnn. You phonio saxo? Nnnn. Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)